Environmental Engineering Reference
In-Depth Information
10.1
Illustration of full-scale PAT studies 2007-2010. Trials and tests
were conducted at LinkoGas a.m.b.a., Lintrup, Denmark. PAT tools for
on-line monitoring facilities were mounted in a recurrent loop
integrated with fermentor no. 3, volume 2400m
3
. Testing of various NIR
probes (transflexive and reflexive) was conducted. The lower right-hand
photo shows the sampling point for chemical reference analysis.
10.3 Optimising and implementing on-line process
control in biogas plants
10.3.1 Efficient monitoring and control of the anaerobic
digestion process
Efficient monitoring and control of fermentation processes including AD
are necessary in order to enhance plant performance. The task of
monitoring and controlling biological processes is to stabilise and optimise
the production of biogas. Another important factor is to increase
production capacity and speed without running any risk of process
instability or inhibition and, finally, to enhance productivity. By applying
process analytical technology (PAT) principles, the above issues can be
addressed effectively (Fig. 10.1) (Junker and Wang, 2006; Mortensen, 2006;
Holm-Nielsen, 2008; Madsen et al., 2011).
10.3.2 Process analytical technologies (PATs)
To facilitate continuous process improvement and optimisation of
productivity and product quality, process data can be monitored and
analysed at whatever resolution found necessary. Process analytical
technology (PAT) represents the right measurement program and technol-
ogies for achieving these goals. PAT was primarily directed towards the
pharmaceutical fermentation and processing industry, but the initiative is
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